Roller-contact for electric welding-machines.



K. SGHMARJE. ROLLER CONTACT FOR ELECTRIC WELDING MACHINES. APPLICATION FILED MAR. 13, 1913.

1,097,883. a Patented May 26,1914.

WITNESSES ATTORNEYS -'ing it to escape to regulatethe circulation of the without evelr PAT N OFFICE.

KONRAD SCHMABJE, or FBANKIORT,

SETTS.

ROLLER-CONTACT 101 Specification of Letters Patent.

GERMANY, ASSIGNOR TO THOMSON ELECTRIC WELDING COMPANY, OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSACHU- nmicrnrc WELDING-MACHINES.

- Patented May 26, 1914.

Application filed larch 13 1813. rill In. "3,854.

--To all whomtt may concern:

Be it known that I, KONRAD SGHMARJE, a subject of the Em ror of Germany, and a resident of Frank ort, Germany, have invented certain new and ments in Roller-Contacts for Electric Welding-Machines, of which the following is a specification.

This invention relates to cooling means? for the contact electrodes of electric welding machines and particularly in electric seam welding apparatus.

Heretofore, resultant from continuous use of roller contacts in seam weldlng apparatus, difficulty has been experienced 1n contacting edge of the keeping the work roller properly cooled by the ordinary ods. Up to the present this cooling edge of the contacthas ordinarily complished by making the contact hollow and forcing water into the hollow chamber allowing it to circulate around the chamber according to its-own free will. The coolinghas also been carried out by dividing the chamber formed within the roll into two chambersand feedin the coolin -water through pipes into one o mber an allowmethof the .'The objectof the present. vention is to overcome the above disadvantages, save the improved coolin welding machines an coolintg-water and more satisfactorily mamtain eshape of the contactsurface of the roll and increase its durability.

I To these ends the invention consists-in devices for electric in the details ofcon- "struction' and combinations ofparts hereinafter more articularly described and then specifiedint'eclaims' v In the accompanying drawings, Figure 1 is a cross-section through a roller contact for electric welding machines constructed in ac-.

cordance with this invention. Fig. 2 is a useful Improvev relates to the cooling of large roller contacts such as used through the other chamber partial front elevation and partial section through the roll.

. The invention is herein illustrated in more or less'diagr'amma'tic form, the manner that the roller contact operates in an electric welding machine toweld seams beintg now well-understood 1n the art and as e invention is applicable to any suitable type of apparatus, any detailed illustration or descrlption of the mounting or specific operat-ion of the roller contact is deemed unnecessary and is dispensed with.

a indicates a hollow stationary shaft upon WhlCh the axis 0. of the roller contact M preferably rotates- The roller contact shown' as comprising a continuous edge N which contacts with the work and welds the same in any of the manners now common -and well-known in the electric welding art. The roller M is provided with a hollow chamber 0 in which islocated a pluralit of nozzles or spouts radiating laterally rom the end of the hollow shaft (1 and forming a general star arrangement. end of the hollow shaft (2 is closed by a coy'er as at g andthe spouts or nozzles f are in communication with the interior of said vided in the front face of the roller to perarrangement, after which the opening 1s cllosed by a cover plate esuitabl'ysecured in p Water is conducted or forced through the hollow shaft a and by means of the nozzles f is forced directly against the inner wall of the contacting edge N. The waterthen flows along the walls towardthe axis and leawes the roll through openings' or assages d bored in the eris 0 of the roll li'l The cipenings or assages d are preferably dis sed near tiie shaft a and are concentrically arran ed around said shaft remote from the arms f. It will thus be seen" that owing to this arrangement, the freshwater is forced directly a ainst the hottest part of the roll, namel -.t e edge. without taking up any heat m other places before reachingthe edge. As the water is thus caused to flow in a certain definite way, the entire edge is cooled evenly and no concentration of heat The forwardunderstood that the invention might be of any desirable form and is here" shaft. -A sufficiently large opening is pro- 86 mit the insertion of the star-shaped'spout ischarge nozzles of thei pouvloo might be carried into efi'ect in various ways and that it is not limited to being carried into efi'ect by the specific constructions shown which are for the purpose of illustration only.

What I claim as my invention is: I I 1. In a roller contact for electric welding 'machincs, means for directing cooling water directly against the inner' surface of the contacting edge ofthe roller before it contacts with other parts thereof.

2. A roller contact for electric welding machines having a hollow chamber and a plurality of radially disposed spouts adapted to direct cooling water against the edge of said roller.

3. In an electric welding machine,'a hollow roller contact, a hollow shaft on which said roller rotates and a stationary star-- shaped series of nozzlesv within said roller and adapted to deliver water direct to the edge of said roller.

4. In an electric welding machine, the combination of a stationary hollow shaft, a hollow roller contact rotating on said shaft, a'plurality of radially disposed nozzles on the end of said shaft within the roller contact and adapted to deliver cooling water to the contact edge of said roller and means remote from said edge for drawing ofi' the water.

Signed at Frankfort-on-the-Main, Gerday of February, A. D. 1913',-

many, this 21st 3 KON RAD SCHMARJ E.

. WVitnesses:

OSKAR MIKSOHKS, ALBERT J ANSKE. 

